574-576 40th Ave, San Francisco, CA 94121

The two-unit residential building at 574-576 40th Avenue in San Francisco's Outer Richmond neighborhood, owned by the Lok Family Trust, has a notable history of unauthorized unit modifications and subsequent remedial actions. Built in 1965, this two-story flats and duplex structure has experienced two significant illegal unit conversion incidents: in 2002, there were reports of unauthorized room construction on the ground level (referred to as unit 574A) with an alleged improper occupancy change from R-1 to R-3, which was investigated and resolved by August 2002 through a permitted remodel project that included the removal of an illegal kitchen and conversion to laundry facilities.

A decade later, in 2008, there was another complaint regarding an illegal unit conversion, indicating a pattern of unauthorized modifications, though this complaint was resolved by July 2009. More recently, the property has experienced infrastructure issues typical of urban environments, with two sidewalk-related complaints recorded on March 15, 2023, though both were resolved quickly with no significant findings upon inspection.

These cases involved a curb or ramp defect and a collapsed sidewalk, both of which were closed within a week of reporting. An unrelated incident involving an abandoned motorcycle was reported in June 2018 but was resolved promptly when the vehicle was no longer present at the inspection time. The building's documented history suggests a recurring issue with unauthorized modifications over time, though the most recent complaints relate to external infrastructure rather than the building itself.